排名

用户解题统计

过去一年提交了

勋章 ①金银铜:在竞赛中获得第一二三名;②好习惯:自然月10天提交;③里程碑:解决1/2/5/10/20/50/100/200题;④每周打卡挑战:完成每周5题,每年1月1日清零。

收藏

收藏日期 题目名称 解决状态
没有收藏的题目。

评论笔记

评论日期 题目名称 评论内容 站长评论
没有评论过的题目。

提交记录

提交日期 题目名称 提交代码
2024-11-07 分类(1)姿势太多很过分,分类要用CaseWhen 
select
case when trx_amt=288 then '1.WithHand'
when trx_amt=388 then '2.WithMimi'
when trx_amt=588 then '3.BlowJobbie'
when trx_amt=888 then '4.Doi'
when trx_amt=1288 then '5.DoubleFly'
else '6.other'
end as ser_typ
,count(1) as trx_cnt
, MIN(trx_time) as first_date
from 
cmb_usr_trx_rcd
where usr_id='5201314520' and mch_nm='红玫瑰按摩保健休闲'
group by ser_typ
order by 1
2024-11-05 分组与聚合函数(6)想知道渣男有多坏,疯狂使用GroupBy 
SELECT 
usr_id,
mch_nm,
SUM(trx_amt) AS trx_amt,
COUNT(*) AS trx_cnt,
MIN(trx_time) AS first_time
FROM cmb_usr_trx_rcd
WHERE usr_id=5201314520 AND trx_amt>=288
GROUP BY mch_nm
ORDER BY trx_cnt DESC
2024-11-05 分组与聚合函数(6)想知道渣男有多坏,疯狂使用GroupBy 
SELECT 
usr_id,
mch_nm,
SUM(trx_amt) AS total_trx_amt,
COUNT(*) AS trx_cnt,
MIN(trx_time) AS first_time
FROM cmb_usr_trx_rcd
WHERE usr_id=5201314520 AND trx_amt>=288
GROUP BY mch_nm
ORDER BY trx_cnt DESC
2024-11-05 分组与聚合函数(5)想知道何时成瘾,用Max Or Min? 
SELECT 
usr_id,
MIN(trx_time) AS first_time,
mch_nm
FROM cmb_usr_trx_rcd
WHERE usr_id=5201314520 AND mch_nm='红玫瑰按摩保健休闲'
ORDER BY trx_time
2024-11-05 分组与聚合函数(5)五花八门的项目,其实都有固定套路(2) 
SELECT 
trx_amt,
COUNT(*) AS total_trx_cnt,
COUNT(DISTINCT usr_id) AS unique_usr_cnt,
COUNT(*)/ COUNT(DISTINCT usr_id) AS avg_trx_per_user
FROM cmb_usr_trx_rcd
WHERE mch_nm="红玫瑰按摩保健休闲" AND 
(DATE(trx_time) BETWEEN '2023-01-01' AND '2024-06-30')
GROUP BY trx_amt
ORDER BY avg_trx_per_user desc limit 5
2024-11-05 分组与聚合函数(5)五花八门的项目,其实都有固定套路(2) 
SELECT 
trx_amt,
COUNT(*) AS total_trx_cnt,
COUNT(DISTINCT usr_id) AS unique_usr_cnt,
COUNT(*)/ COUNT(DISTINCT usr_id) AS avg_trx_per_user
FROM cmb_usr_trx_rcd
WHERE mch_nm="红玫瑰按摩保健休闲"
GROUP BY trx_amt
ORDER BY avg_trx_per_user desc limit 5
2024-11-05 分组与聚合函数(3)五花八门的项目,其实都有固定套路(1) 
SELECT 
trx_amt,
COUNT(*) AS trx_cnt
FROM cmb_usr_trx_rcd
WHERE mch_nm='红玫瑰按摩保健休闲' AND 
DATE(trx_time) BETWEEN '2024-01-01' AND '2024-07-31'
GROUP BY trx_amt 
ORDER BY trx_cnt DESC LIMIT 5
2024-11-05 分组与聚合函数(2)擦边营收怎么样,聚合函数可看出 
SELECT 
DATE(trx_time) AS trx_date,
MAX(trx_amt) AS max_trx_amt,
MIN(trx_amt) AS min_trx_amt,
AVG(trx_amt) AS avg_trx_amt,
SUM(trx_amt) AS total_trx_amt
FROM cmb_usr_trx_rcd
WHERE mch_nm='红玫瑰按摩保健休闲' AND
(DATE(trx_time) BETWEEN '2024-09-01' AND '2024-09-30')
GROUP BY trx_date
ORDER BY trx_date
2024-11-05 分组与聚合函数(1)Money全都花在哪,GroupBy来查一查 
SELECT 
mch_nm,
SUM(trx_amt) AS sum_trx_amt
FROM cmb_usr_trx_rcd
WHERE usr_id=5201314520 AND
YEAR(trx_time)=2024
GROUP BY mch_nm
ORDER BY sum_trx_amt DESC
2024-11-05 条件过滤(3)Hour函数很给力,组合条件要仔细 
SELECT * FROM cmb_usr_trx_rcd
WHERE usr_id= 5201314520 AND
(DATE(trx_time) BETWEEN '2024-09-01' AND '2024-09-30') AND
(HOUR(trx_time)>=22 OR HOUR(trx_time)<=5)
ORDER BY trx_time
2024-11-05 条件过滤(2)半夜活动有猫腻,Hour函数给给力 
SELECT * FROM cmb_usr_trx_rcd
WHERE (DATE(trx_time) BETWEEN '2024-09-01' AND '2024-09-30') AND
(HOUR(trx_time)between 1 AND 5) AND
usr_id=5201314520
ORDER BYtrx_time
2024-11-05 条件过滤(2)半夜活动有猫腻,Hour函数给给力 
SELECT * FROM cmb_usr_trx_rcd
WHERE (DATE(trx_time) BETWEEN '2024-09-01' AND '2024-09-30') AND
(HOUR(trx_time)between 1 AND 5)
ORDER BYtrx_time
2024-11-05 条件过滤(2)半夜活动有猫腻,Hour函数给给力 
SELECT * FROM cmb_usr_trx_rcd
WHERE (DATE(trx_time) BETWEEN '2024-09-01' AND '2024-09-30') AND
(HOUR(trx_time) BETWEEN 1 AND 4)
ORDER BYtrx_time
2024-11-05 条件过滤(2)半夜活动有猫腻,Hour函数给给力 
SELECT * FROM cmb_usr_trx_rcd
WHERE (DATE(trx_time) BETWEEN '2024-09-01' AND '2024-09-30') AND
(HOUR(trx_time) BETWEEN 1 AND 5)
ORDER BYtrx_time
2024-11-05 条件过滤(1)异地男友有异常,数分闺蜜来帮忙 
SELECT * FROM cmb_usr_trx_rcd
WHERE usr_id=5201314520 AND 
(trx_time<='2024-09-30 23:59:59' AND trx_time>='2024-09-01 00:00:00')
ORDER BY trx_time
2024-11-05 条件过滤(1)异地男友有异常,数分闺蜜来帮忙 
SELECT * FROM cmb_usr_trx_rcd
WHERE usr_id=5201314520 AND 
(trx_time<='2024-09-30 23:59:59' AND trx_time>='2024-09-01 00:00:00')